Mitsubishi Outlander XL. Manual — part 315

DTC SET CONDITIONS

Logic Flow Chart

AK603767 AA00

No

No

No

No

Yes

Yes

Yes

Yes

Good

Malfunction

Monitoring

conditions

Specified times monitored?

Rf < R1

Rf > R0

End

Start

Calculate frequency of

front oxygen sensor output signal (Ff)

Calculate frequency of

rear oxygen sensor output signal (Fr)

Calculate frequency ratio (Rf = Fr/Ff)

Calculate average frequency

ratio (Rf = Fr/Ff) of specified times

Check Conditions

｠

Engine speed is lower than 3,000 r/min.

｠

Accelerator pedal is open.

｠

Mass airflow is between 10 and 35 g/sec.

｠

More than 3 seconds have elapsed after the above-
mentioned three conditions have been met.

｠

Intake air temperature is higher than -10°C (14°F).

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-455

DIAGNOSTIC TROUBLE CODE PROCEDURES

｠

Barometric pressure is higher than 76 kPa (22.4
in.Hg).

｠

Under the closed loop air/fuel ratio control.

｠

Vehicle speed is 1.5 km/h (1.0 mph) or more.

｠

The PCM monitors for this condition for 3 cycles of
12 seconds each during the drive cycle.

｠

Short-term fuel trim is higher than -25 percent and
lower than +25 percent.

｠

The cumulative mass airflow is higher than 1,638 g.

Judgement Criterion

｠

When the monitoring for 12 seconds is carried out
5 times, the frequency ratio of rear and front is 0.7
or more.

OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function - OBD-II Drive Cycle -
Pattern 4 P.13Ab-8.

TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are: )

｠

Catalytic converter deteriorated (Exhaust leak).

DIAGNOSIS

Required Special Tools:

｠

MB991958: Scan tool (M.U.T.-III Sub Assembly)

｠

MB991824: V.C.I.

｠

MB991827: USB Cable

｠

MB991910: Main Harness A

STEP 1. Replace the left bank side catalytic converter.

(1)

Replace the catalytic converter.

(2)

Carry out a test drive with the drive cycle pattern. Refer to
Diagnostic Function - OBD-II Drive Cycle - Pattern 4 P.
13Ab-8.

(3)

Check the diagnostic trouble code (DTC).

Q:Is DTC P0431 set?

YES:

Replace the ECM. When the ECM is replaced, register

the ID code. Refer to GROUP 42B, ID Code Registration
Judgment Table <Vehicles with KOS> P.42B-12or GROUP
42C, ID Code Registration Judgment Table <Vehicles with
WCM> P.42C-8.

NO:

The inspection is complete.

DTC P0441: Evaporative Emission Control System Incorrect Purge Flow

M11310100231USA0000010000

13Ab-456

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

ZK603611

Evaporative emission
purge solenoid

AA00

B-07 (B)

Connector: B-07

ZK603612 AA00

Evaporative emission
ventilation solenoid

Spare tire

B-116 (GR)

Connector: B-116

TECHNICAL DESCRIPTION

｠

ECM detects a stuck open condition of evaporative
emission purge solenoid valve and a stuck closed
condition of evaporative emission ventilation
solenoid valve by pressure change in fuel tank.

｠

Stuck open evaporative emission purge solenoid
valve is judged through monitoring leak of
evaporative emission system.

｠

Stuck closed evaporative emission ventilation
solenoid valve is judged after 20 seconds from end
of monitoring leak of evaporative emission system,
or of usual operation of evaporative emission purge
solenoid from ON to OFF.

DESCRIPTIONS OF MONITOR METHODS

Fuel tank pressure decreases largely during purge-
cut.

MONITOR EXECUTION

Continuous

MONITOR EXECUTION CONDITIONS (Other
monitor and Sensor)

Other Monitor (There is no temporary DTC stored in
memory for the item monitored below)

｠

Fuel tank pressure sensor monitor

Sensor (The sensor below is determined to be
normal)

｠

Not applicable

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-457

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC SET CONDITION

Logic Flow Chart

ZK603768AA00

Good

Malfunction

Start

End

No

No

No

No

No

Yes

Yes

Yes

Yes

Yes

Continuous

failure for 100msecs

Monitoring conditions for

malfunction detection?

Fuel-tank pressure

< -200mmAq

Monitoring conditions for

pass judgement?

P

F3

Detected during

Evap. monitor?

Check Conditions

｠

ON duty cycle of the evaporative emission purge
solenoid is 0 percent.

｠

Engine is running.

｠

20 seconds have elapsed since the duty cycle of the
evaporative emission purge solenoid has turned to
0 percent.

Judgement Criterion

｠

The pressure in the fuel tank is -2 kPa (-0.59 in.Hg)
or less for 0.1 second.

OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function - OBD-II Drive Cycle -
Pattern 5 P.13Ab-8.

TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are: )

｠

Evaporative emission purge solenoid failed.

｠

Evaporative emission ventilation solenoid failed.

｠

ECM failed.

｠

Purge line or vapor line seal is leaking.

DIAGNOSIS

Required Special Tools:

｠

MB991958: Scan tool (M.U.T.-III Sub Assembly)

｠

MB991824: V.C.I.

｠

MB991827: USB Cable

｠

MB991910: Main Harness A

13Ab-458

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES